InChI=1S/C21H18O10/c22-10-7-4-8-11-12(10)13(23)18(17(29-11)9-5-2-1-3-6-9)30-21-16(26)14(24)15(25)19(31-21)20(27)28/h1-8,14-16,19,21-22,24-26H,(H,27,28)